An der Universität Duisburg-Essen wird das E-Assessment-System JACK verwendet. Dieses wird dazu genutzt Vorlesungen zu unterstützen, indem es verschiedene Arten von Aufgaben überprüft und den Benutzern automatisch ein Feedback zu seinen Lösungen gibt. Das System JACK unterstützt beim Prüfen von Programmieraufgaben verschiedene Programmiersprachen und kann durch seinen modularen Aufbau leicht er...

An enzyme was extensively purified from jack bean leaves (Canavalia ensiformis L.) which produced o-ureidohomoserine from l-canaline and carbamyl phosphate. The most highly purified preparations catalyzed both this reaction and citrulline synthesis from ornithine and carbamyl phosphate, and the ratio of the two activities remained nearly constant during purification. When hydrated jack bean see...

Performing a realistic assessment of unreinforced masonry structures involves designing and executing appropriate experimental tests on components for determining the material model parameters to be used in structural analysis. Considering recent developments which inverse analysis was as calibration framework, vertical flat-jack test is investigated this paper. Two simplified models are descri...

We derive a Jacobi-Trudi type formula for Jack functions of rectangular shapes. In this formula, we make use of a hyperdeterminant, which is Cayley’s simple generalization of the determinant. In addition, after developing the general theory of hyperdeterminants, we give summation formulae for Schur functions involving hyperdeterminants, and evaluate Toeplitztype hyperdeterminants by using Jack ...